import os
import json
import unittest
import jc.parsers.top_s

THIS_DIR = os.path.dirname(os.path.abspath(__file__))

# To create streaming output use:
# $ cat top.out | jc --top-s | jello -c > top-streaming.json


class MyTests(unittest.TestCase):

    def setUp(self):
        # input
        with open(os.path.join(THIS_DIR, os.pardir, 'tests/fixtures/centos-7.7/top-b-n3.out'), 'r', encoding='utf-8') as f:
            self.centos_7_7_top_b_n3 = f.read()

        with open(os.path.join(THIS_DIR, os.pardir, 'tests/fixtures/centos-7.7/top-b-n1-gib.out'), 'r', encoding='utf-8') as f:
            self.centos_7_7_top_b_n1_gib = f.read()

        with open(os.path.join(THIS_DIR, os.pardir, 'tests/fixtures/centos-7.7/top-b-n1-gib-allfields-w.out'), 'r', encoding='utf-8') as f:
            self.centos_7_7_top_b_n1_gib_allfields_w = f.read()

        # output
        with open(os.path.join(THIS_DIR, os.pardir, 'tests/fixtures/centos-7.7/top-b-n3-streaming.json'), 'r', encoding='utf-8') as f:
            self.centos_7_7_top_b_n3_streaming_json = json.loads(f.read())

        with open(os.path.join(THIS_DIR, os.pardir, 'tests/fixtures/centos-7.7/top-b-n1-gib-streaming.json'), 'r', encoding='utf-8') as f:
            self.centos_7_7_top_b_n1_gib_streaming_json = json.loads(f.read())

        with open(os.path.join(THIS_DIR, os.pardir, 'tests/fixtures/centos-7.7/top-b-n1-gib-allfields-w-streaming.json'), 'r', encoding='utf-8') as f:
            self.centos_7_7_top_b_n1_gib_allfields_w_streaming_json = json.loads(f.read())

    def test_top_s_nodata(self):
        """
        Test 'top' with no data
        """
        self.assertEqual(list(jc.parsers.top_s.parse([], quiet=True)), [])

    def test_top_s_b_n3_centos_7_7(self):
        """
        Test 'top -b -n3' on Centos 7.7
        """
        self.assertEqual(list(jc.parsers.top_s.parse(self.centos_7_7_top_b_n3.splitlines(), quiet=True)), self.centos_7_7_top_b_n3_streaming_json)

    def test_top_s_b_n1_gib_centos_7_7(self):
        """
        Test 'top -b -n1' with GiB units on Centos 7.7
        """
        self.assertEqual(list(jc.parsers.top_s.parse(self.centos_7_7_top_b_n1_gib.splitlines(), quiet=True)), self.centos_7_7_top_b_n1_gib_streaming_json)

    def test_top_s_b_n1_gib_allfields_w_centos_7_7(self):
        """
        Test 'top -b -n1 -w' with GiB units, all fields selected and wide output on Centos 7.7
        """
        self.assertEqual(list(jc.parsers.top_s.parse(self.centos_7_7_top_b_n1_gib_allfields_w.splitlines(), quiet=True)), self.centos_7_7_top_b_n1_gib_allfields_w_streaming_json)


if __name__ == '__main__':
    unittest.main()